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3 years ago

Please help me out with this

Mathematics

1 answer:

valentina_108 [34]3 years ago

7 0

Answer:

Step-by-step explanation:

If 2 chords are equal then the distance from their centre are also equal

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Find the Area of a circle with a diameter of 10 inches

LekaFEV [45]

Answer:

78.5 inch²

Step-by-step explanation:

Given

diameter (d) = 10 inches

radius (r) = 10 / 2 = 5 inches

Area of circle

= πr²

= 3.14 * ( 5)²

= 3.14 * 25

= 78.5 inch²

6 0

2 years ago

I need help please please

miv72 [106K]

Answer:

The value of x is 7.

Step-by-step explanation:

First, you have to make the left side into 1 fraction by making the denormintor the same and make it into simplest form :

$\frac{x}{3} + \frac{x}{6}$

$= \frac{x \times 2}{3 \times 2} + \frac{x}{6}$

$= \frac{2x}{6} + \frac{x}{6}$

$= \frac{2x + x}{6}$

$= \frac{3x}{6}$

$= \frac{x}{2}$

Next you have to multiply both sides by 2 in order to make x the subject :

$\frac{x}{2} = \frac{7}{2}$

$\frac{x}{2} \times 2 = \frac{7}{2} \times 2$

$x = 7$

5 0

3 years ago

£980 is divided between Caroline, Sarah & Gavyn so that Caroline gets twice as much as Sarah, and Sarah gets three times as

Nitella [24]

Sarah has received £ 294

Solution:

Given that £980 is divided between Caroline, Sarah & Gavyn

Let "c" be the amount received by caroline

Let "s" be the amount received by sarah

Let "g" be the amount received by gavyn

Caroline gets twice as much as Sarah

amount received by caroline = twice as much as Sarah

amount received by caroline = 2(amount received by sarah)

c = 2s ---- eqn 1

Sarah gets three times as much as Gavyn

amount received by sarah = three times as much as Gavyn

amount received by sarah = 3(amount received by gavyn)

s = 3g ------- eqn 2

Given that total amount is 980

c + s + g = 980 --- eqn 3

Let us solve eqn 1, 2, 3 to get values of "c" "s" "g"

From eqn 2,

$g = \frac{s}{3}$ --- eqn 4

Substitute eqn 1 and eqn 4 in eqn 3

$2s + s + \frac{s}{3} = 980\\\\\frac{6s + 3s + s}{3} = 980\\\\6s + 3s + s = 980 \times 3\\\\10s = 2940\\\\s = 294$

Thus sarah has received £ 294

7 0

3 years ago

A is directly proportional to b

KonstantinChe [14]

Answer:

a = kb

Step-by-step explanation:

"a is directly proportional to b" is expressed as a = kb, where k is the "constant of proportionality."

8 0

3 years ago

If f(x) = 8x + 9, each time x increases by 1 unit, f(x) increases by units.

alexira [117]

7 Units.

8(1)+9= 17
8(2)+9=25
8(3)+9=33

33-25=7. 25-17=7

3 0

3 years ago